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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Toxicological information

Skin irritation / corrosion

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Administrative data

Endpoint:
skin irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
03. Jan 1967 - 11. Jan 1967
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1967
Report date:
1967

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
Deviations:
not specified
Principles of method if other than guideline:
BASF Test, see details in remarks on material and methods
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Morpholine
EC Number:
203-815-1
EC Name:
Morpholine
Cas Number:
110-91-8
Molecular formula:
C4H9NO
IUPAC Name:
morpholine
Test material form:
liquid

Test animals

Species:
rabbit
Strain:
Vienna White
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Weight at study initiation: 3.22 and 2.94 kg

Test system

Type of coverage:
occlusive
Preparation of test site:
clipped
Vehicle:
unchanged (no vehicle)
Controls:
other: untreated skin of the same animals served as control.
Duration of treatment / exposure:
1, 5, 15 min or 20 hours
Observation period:
8 days
Number of animals:
2 animals
Details on study design:
TEST SITE
- Area of exposure: 2.5 x 2.5 cm

REMOVAL OF TEST SUBSTANCE
- Washing (if done): conc. Lutrol and 50 % Lutrol solution
- Time after start of exposure: 1, 5 or 15 min post exposure

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
overall irritation score
Remarks:
1 min exposure
Basis:
mean
Time point:
other: 8 days
Score:
1
Max. score:
3
Reversibility:
not reversible
Remarks on result:
positive indication of irritation
Irritation parameter:
overall irritation score
Remarks:
5 and 15 minutes
Basis:
mean
Time point:
other: 8 days
Score:
2
Max. score:
3
Reversibility:
not reversible
Remarks on result:
positive indication of irritation
Irritation parameter:
erythema score
Basis:
mean
Time point:
24/48/72 h
Remarks on result:
not measured/tested
Irritation parameter:
edema score
Basis:
mean
Time point:
24/48/72 h
Remarks on result:
not measured/tested
Irritant / corrosive response data:
The application of the test substance for 1 min caused in 1 animal haemorrhagic areas and leathery-like necrosis at the end of the observation period.
The application for 5 min caused after 24 hours parchment-like necrosis in 1 animal and haemorrhagic areas after 24 hours and leathery-like necrosis after 8 days.
The application of the test substance for 15 min caused haemorrhagic areas, oedema and parchment-like necrosis after 24 hours which declined to leathery-like necrosis after 8 days.
Leathery-like necrosis was considered as a full-thickness necrosis.

Applicant's summary and conclusion

Interpretation of results:
Category 1 (corrosive) based on GHS criteria